Conjugación del verbo inglés
COULD RET

Verbo regular: ret - retted - retted

Afirmación

Forma simple	Forma con V-ing
I could ret you could ret he could ret we could ret you could ret they could ret	I could be retting you could be retting he could be retting we could be retting you could be retting they could be retting
Perfecto	Perfecto con V-ing
I could have retted you could have retted he could have retted we could have retted you could have retted they could have retted	I could have been retting you could have been retting he could have been retting we could have been retting you could have been retting they could have been retting

Negación

Forma simple	Forma con V-ing
I could not ret you could not ret he could not ret we could not ret you could not ret they could not ret	I could not be retting you could not be retting he could not be retting we could not be retting you could not be retting they could not be retting
Perfecto	Perfecto con V-ing
I could not have retted you could not have retted he could not have retted we could not have retted you could not have retted they could not have retted	I could not have been retting you could not have been retting he could not have been retting we could not have been retting you could not have been retting they could not have been retting

Forma interrogativa

Forma simple	Forma con V-ing
could I ret? could you ret? could he ret? could we ret? could you ret? could they ret?	could I be retting? could you be retting? could he be retting? could we be retting? could you be retting? could they be retting?
Perfecto	Perfecto con V-ing
could I have retted? could you have retted? could he have retted? could we have retted? could you have retted? could they have retted?	could I have been retting? could you have been retting? could he have been retting? could we have been retting? could you have been retting? could they have been retting?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not ret? could you not ret? could he not ret? could we not ret? could you not ret? could they not ret?	could I not be retting? could you not be retting? could he not be retting? could we not be retting? could you not be retting? could they not be retting?
Perfecto	Perfecto con V-ing
could I not have retted? could you not have retted? could he not have retted? could we not have retted? could you not have retted? could they not have retted?	could I not have been retting? could you not have been retting? could he not have been retting? could we not have been retting? could you not have been retting? could they not have been retting?